ALARP Decision Making

Question 1

True / False?

Quantitative considerations alone are enough to be the deciding factor in choosing risk reduction measures

Answer 1

False!
The HSE stress that other issues such as good practice, constraints, adverse consequences, uncertainty and appropriate regulatory practice are also important.

Question 2

An important element in ALARP is to make up the balance between ______ and ______ using a CBA.

Answer 2

An important element in ALARP is to make up the balance between benefits and disbenefits using a CBA.

Question 3

Generally, the most important costs are ______ , while the most important benefits are ______ .

Answer 3

Generally, the most important costs are implementation and operation costs, while the most important benefits are safety benefits.

Question 4

What is “Time at Risk”?

Answer 4

Time at risk is the expression used to indicate temporary periods in which the risk is higher than usual.

Question 5

What is “Gross Disproportionality”?

Answer 5

The law requires that improvements are carried out as long as the costs are not “grossly disproportionate” to the benefits.

For example, a factor of 3 would mean that the costs to benefits ratio would have to exceed 3 before a duty holder could argue that the costs were grossly disproportionate.